442274143 has 4 divisors (see below), whose sum is σ = 442485568. Its totient is φ = 442062720.

The previous prime is 442274137. The next prime is 442274171. The reversal of 442274143 is 341472244.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 442274143 - 2⁵ = 442274111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442274243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102543 + ... + 106768.

It is an arithmetic number, because the mean of its divisors is an integer number (110621392).

Almost surely, 2^442274143 is an apocalyptic number.

442274143 is a deficient number, since it is larger than the sum of its proper divisors (211425).

442274143 is a wasteful number, since it uses less digits than its factorization.

442274143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211424.

The product of its digits is 21504, while the sum is 31.

The square root of 442274143 is about 21030.3148573672. The cubic root of 442274143 is about 761.8986134377.

The spelling of 442274143 in words is "four hundred forty-two million, two hundred seventy-four thousand, one hundred forty-three".